US PATENT SUBCLASS 556 / 403
.~.~.~ Boron is ring member

Current as of: June, 1999
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556 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {3}
400  DF  .~ SILICON CONTAINING {19}
402  DF  .~.~ Boron containing {1}
403.~.~.~ Boron is ring member

DEFINITION

Classification: 556/403

(under subclass 402) Compounds in which the boron is a member

of a ring.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]